While cranking up the AC on a hot summer day or running the furnace in the winter may feel great, it can have its drawbacks, especially when those monthly energy bills come in. To reduce those high energy costs and keep air quality at optimum levels, homeowners should consider insulating their home’s ductwork in the attic.
Duct insulation can be an easy DIY project, but it’s important to plan ahead and prepare properly before starting. In addition to the cost of purchasing insulation, tools and supplies like gloves, goggles, a dust mask, a box cutter and duct tape are also needed. Because the job involves working in an attic or crawl space, homeowners should also take special precautions to protect themselves from dust and dirt particles.
It’s important to choose the right type of insulation for your duct system. Insulation is rated by its R-value, which indicates its ability to resist heat flow. The climate of your area and the temperature difference between the ductwork and the surrounding environment will influence the type of insulation you choose. Insulation that has a moisture resistance component is also an option, which helps to prevent condensation problems in ductwork.
Supply and return ducts passing through unconditioned spaces, such as attics or crawlspaces, require more insulation (the 2015 IECC requires at least R-8 for climate zones 1-5). However, most commercial properties have HVAC systems that serve larger rooms and need to transfer heated or cooled air from one room to another, so their ductwork needs more insulation than homes. insulation duct